You can put this solution on YOUR website! When the exponent is zero why is the answer one?
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I think you would agree that a/a = 1, as long as a is not zero.
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But using the law of exponents a/a = a^(1-1) = a^0
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So a/a = 1 and a/a = a^0;
Therefore a^0 = 1 for any value of a except a=0.
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Cheers,
Stan H.